Solar Energy Systems 01.09.2009
Page
6
Mounting Directions for In-Roof Photovoltaic Systems
Ernst Schweizer AG, Metallbau, CH-8908 Hedingen, T41 44 763 61 11, T41 44 763 61 19, www.schweizer-metallbau.ch
2.5.1 Electrical
Installation
Ensure that the electrical installation and initial operation is carried out by a licensed electrician.
See that the entire off-circuit voltage is hooked up even by minimal sunshine.
Do not exceed the maximum permissible system voltage of the photovoltaic modules even by low
temperatures.
Electric Arcs on Direct Current Conductors!
Simultaneous contact to both poles causes fatal injury.
Do not sever live cables.
Bare cable ends should be connected or insulated.
Voltage Higher than Safety Extra-Low Voltage (SELV)!
Injury to persons due to summation of voltage during series connection
Observe proper safety and security measures.
Dampness During Electrical Installation!
Injury to persons, damage to the system
Carry out work on the system only on a dry undersurface.
During installation see that photovoltaic modules, wiring, etc., are dry.
2.5.2
Working on the Roof
TIP
Safety regulations state that work higher than 3 meters (eaves height) requires scaffolding with safety nets.
If it is not possible to put up scaffolding or if the roof is very steep:
Put on a safety harness and attach it to a stable structure.
Use a proper safety rail when working on the roof.
Arrange for a suitable work surface for tools and material.
Arrange for cordoned off areas to protect against falling objects.
Heed all relevant regulations for working on a roof.
